Door opening and closing device



A. A. GOOSMAN DOOR OPENING AND CLOSING DEVICE Filed Nov. 22, 1924 3 Sheets-Sheet "l M WWNMWW INVENTOR Oct. 19 1926. l

A. A. GOOSMAN DOOR OPENING AND CLOSING DEVICE Filed Nov. 22. 1924 3 Sheets-Sheet 2 ATTORNEY INVENTQR Oct. 19,1926. 1,604,037

A. A. GOOSMAN DOOR OPENING AND CLOSING DEVICE Filed Nov. 22, 1924 3 Sheets-Sheet 5 fi r ,f/fi INVENTOR ATTORNEY Patented Oct. 19, 1926.

net-WED STATES PATENT OFFICE.

ALBERT A. eoosrran, or Tnouivrsnn, nnnnasira.

noon ornmivc Anncnosrne nnvicn.

Application filed November as, 1924. serial No. 751,555.

This invention relates to door opening means, the general object of the invention being to provide means whereby a vehicle about to entera building or to leave the same will actuate means for opening and closing the door or doors thereof so that it is not necessary for a person to leave a vehicle to open and close the doors.

A further object of the invention is to provide means whereby the operating means within the building can actuate the door without operat ng the actuating means outside of the building and vice versa.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying draw ngs and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein l ke characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a front view of a building showing the invention in use, parts being broken away.

Figure 2 is a plan view with parts in section.

Figure 8 is a vertical sectional view taken through Figure 1.

Figure 4c is a detail sectional view of the differential means.

In these views, A indicates a building which is shown as a garage and B indicates the doors thereof which are slidably mounted on the tracks a. In carrying out my invention I arrange sprockets 1 on the shafts 2 and stretch an endless chain 3 over the sprockets, the upper stretch of the chain being connected with one door by a rod 4: and the lower stretch connected with the other door by the rod l. Thus as the chain is moved the doors will be caused to move towards each other or away from each other according to the direction of movement. Fluted rollers 5 are arranged in the drive way for the vehicle, one of these rollers being arranged within the garage and the other outside of the garage a distance from the front thereof. Each roller is arranged in a casing 6 in such a manner that it will be engaged by the wheels of the vehicle passing along the driveway and will thus be rotated as the vehicle passes oi'er the same. The bear ngs 7 for each roller" are yieldingly suported by the springs 8 so that the roller will give-slightly under the weight of the vehicle and will be frictionally held against the tvlfeels.tliereof. Small rollers 9 are arranged in the top of'the casing, one on each side of each roller.. A vertically arranged shaft 10 is geared to each roller by means of the beveled gears 11 The inner shaft is connected by the gears 12 with one of the shafts 2 and the outer vertical shaft is connected by the gears 13 w th a shaft 2, this shaft 2 and the outer vertical shaft being supported by the post 1a. The sprocket 1' at the left hand side of the building is made in the form of a casing and is rotatably mounted on the adjacent ends of the shafts 2 and 2 and these abutting ends carry the gears 15 which mesh with the beveled pinions 16 carried by the stub shafts projecting inward from the sprocket 1. This arrangement constitutes a different al means so that the shafts 2 and 2 can rotate independent of each other so that the movement of one roller 5 will not be communicated to the other roller 5. The shaft 2 is formed in two parts with clutch means 17 connecting the two parts tcgether and a hand lever 18 is arranged to actuate the clutch means. Thus the parts can be arranged so that the outer roller 5 will not operate the doors.

From the foregoing it will be seen that when a vehicle approaches the garage it will run over the outer roller, thus causing the same to rotate and the movement of this roller will be commun cated through the shafts 10 and 2 to the differential means and through such means to t le sprocket 1 which will actuate the chain 3 and thus open the doors so that the vehicle can enter the building. As its rear wheels pass over the inner roller the parts will be operated in a reverse direction so that the doors will be closed in rear of the vehicle. Then when the vehicle is to be backed out the inner roller 5 will be rotated by the reverse movement of the rear" wheels of the vehicle in a direction which will cause the doors to open and then as the vehicle passes over the outer roller the parts will be moved to close the doors again.

It will thus be seen that I have produced a simple means for opening and closing the doors of a garage or other building by a vehicle Without the driver or other occupant leaving the vehicle.

It is thought from the foregoing description that the advantages and novel features of my invention Will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall ithin the scope of the appended claim.

What I claim is In combination with a building and its door, a pair of sprockets, an endless chain passing over the sprockets, rods connecting the upper and lower reaches of the chains with the door, sectional shafts having one section connected With one of the sprockets, a pair of rollers placed in the drive-way of the building and actuated by the Wheels of a vehicle passing into the building or leaving the building, a vertical shaft geared to each roller, gears connecting the upper ends of the vertical shafts to the sectional shafts, clutch means connected to the said sectional shafts and preventing movement of the doors by the outer roller While the inner roller, is being operatedand reta ning the inner roller against movement while the outer roller is being operated.

In testimony whereof I affix my signature.

ALBERT A. GOOSMAN. 

